Gahnospinel and Hardystonite Optical Properties

Gahnospinel

Hardystonite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous

Vitreous, Resinous, Greasy

1.2 Pleochroism

AbsentWalter Schumann

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Gemmological Tables (2004)

Handbook of mineralogy (2001)

1.5 Refractive Index

1.735-1.7901.672

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Isometric

tetragonal

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Handbook of mineralogy (2001)

Gahnospinel and Hardystonite Optic Character

Gahnospinel and Hardystonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Gahnospinel and Hardystonite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Gahnospinel and Hardystonite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Compare Blue Gemstones

Gahnospinel Vs Jeremejevite

Gahnospinel Vs Hydrogrossular

Gahnospinel Vs Indicolite Blue Tourmaline

Gahnospinel and Hardystonite Transparency

Similar to their colors, Gahnospinel and Hardystonite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Gahnospinel is Gemmological Tables (2004) while Gahnospinel is Gemmological Tables (2004) in appearance.